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公开(公告)号:US20200086530A1
公开(公告)日:2020-03-19
申请号:US16572569
申请日:2019-09-16
申请人: Matt Wallen , Jens Rossfeldt , Justin Wallen
发明人: Matt Wallen , Jens Rossfeldt , Justin Wallen
摘要: This invention involves the incorporation of gas in the matrix of a mandrel. The incorporation of gas, as foam, into the matrix of a mandrel reduces the density of the mandrel. The resulting mandrel is easier to remove from finished product by washout or disintegration. Therefore it is of great value in the use of mandrels in making hollow composite parts.